Commits on Apr 20, 2020

1. Support v-for="(item, index)" …

   This adds rudimentary support for iterating over a value with the
   optional second argument for the index. (Because lists and objects are
   so similar in PHP, this also doubles as support for iterating over an
   object with the optional second argument for the key; the optional third
   argument for the index in that case is not supported, though.)
   
   Note that, due to the limited JS evaluation in this templating engine,
   there’s not a whole lot you can do with the index. In the WikibaseLexeme
   use case, the index is only actually used in a part of the template
   that’s never server-side rendered; the loop still has to be declared
   using the index form even for the PHP renderer, though.
   
   The unrelated change from v-else="" to v-else in the fixtures was
   generated by `npm run-script populate-fixtures`, presumably due to a
   newer Vue.js version now being used – we don’t commit the
   package-lock.json (yet?). I figured I might as well add it, since one of
   the fixtures is changed anyways to test the feature.

   

   lucaswerkmeister committed Apr 20, 2020
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